Acrothrix gracilis Kylin, 1907 (additional source)
Agarum clathratum Dumortier, 1822 (additional source)
Ahnfeltia plicata (Hudson) E.M.Fries, 1836 (additional source)
Alaria esculenta (Linnaeus) Greville, 1830 (additional source)
Antithamnion cruciatum (C.Agardh) Nägeli, 1847 (additional source)
Antithamnionella floccosa (O.F.Müller) Whittick, 1980 (additional source)
Asperococcus fistulosus (Hudson) W.J.Hooker, 1833 (additional source)
Bangia fuscopurpurea (Dillwyn) Lyngbye, 1819 (additional source)
Blastophysa rhizopus Reinke, 1889 (additional source)
Blidingia marginata (J.Agardh) P.J.L.Dangeard ex Bliding, 1963 (additional source)
Blidingia minima (Nägeli ex Kützing) Kylin, 1947 (additional source)
Bolbocoleon piliferum Pringsheim, 1862 (additional source)
Bonnemaisonia hamifera Hariot, 1891 (additional source)
Botrytella micromora Bory, 1822 (additional source)
Bryopsis hypnoides J.V.Lamouroux, 1809 (additional source)
Bryopsis plumosa (Hudson) C.Agardh, 1823 (additional source)
Callithamnion corymbosum (Smith) Lyngbye, 1819 (additional source)
Callithamnion tetragonum (Stackhouse) S.F.Gray, 1821 (additional source)
Capsosiphon fulvescens (C.Agardh) Setchell & N.L.Gardner, 1920 (additional source)
Ceramium deslongchampsii Chauvin ex Duby, 1830 (additional source)
Ceramium diaphanum (Lightfoot) Roth, 1806 (additional source)
Ceramium rubrum C.Agardh, 1811 accepted as Ceramium virgatum Roth, 1797 (additional source)
Ceramium strictum (Kützing) Rabenhorst, 1847 accepted as Ceramium deslongchampsii Chauvin ex Duby, 1830 (additional source)
Chaetomorpha aerea (Dillwyn) Kützing, 1849 (additional source)
Chaetomorpha brachygona Harvey, 1858 (additional source)
Chaetomorpha capillaris (Kützing) Børgesen, 1925 (additional source)
Chaetomorpha linum (O.F.Müller) Kützing, 1845 (additional source)
Chaetomorpha melagonium (F.Weber & D.Mohr) Kützing, 1845 (additional source)
Chaetomorpha picquotiana Montagne ex Kützing, 1849 (additional source)
Chondria dasyphylla (Woodward) C.Agardh, 1817 (additional source)
Chondrus crispus Stackhouse, 1797 (additional source)
Chorda filum (Linnaeus) Stackhouse, 1797 (additional source)
Chordaria flagelliformis (O.F.Müller) C.Agardh, 1817 (additional source)
Choreocolax polysiphoniae Reinsch, 1875 (additional source)
Cladophora albida (Nees) Kutzing, 1843 (additional source)
Cladophora pygmaea Reinke, 1888 accepted as Lychaete pygmaea (Reinke) M.J.Wynne, 2017 (additional source)
Cladophora refracta Kützing, 1843 (basis of record)
Cladophora ruchingeri (C.Agardh) Kützing, 1845 (additional source)
Cladophora rupestris (Linnaeus) Kützing, 1843 (additional source)
Cladophora sericea (Hudson) Kützing, 1843 (additional source)
Cladophora vagabunda (Linnaeus) Hoek, 1963 (additional source)
Cladosiphon zosterae (J.Agardh) Kylin, 1940 (additional source)
Clathromorphum circumscriptum (Strömfelt) Foslie, 1898 (additional source)
Clathromorphum compactum (Kjellman) Foslie, 1898 (additional source)
Coilodesme bulligera Strömfelt, 1886 (additional source)
Colpomenia peregrina Sauvageau, 1927 (additional source)
Corallina officinalis Linnaeus, 1758 (additional source)
Cystoclonium purpureum (Hudson) Batters, 1902 (additional source)
Dasya baillouviana (S.G.Gmelin) Montagne, 1841 accepted as Dasya pedicellata (C.Agardh) C.Agardh, 1824 (additional source)
Delamarea attenuata (Kjellman) Rosenvinge, 1893 (additional source)
Derbesia marina (Lyngbye) Solier, 1846 (additional source)
Dermatocelis laminariae Rosenvinge, 1898 (additional source)
Desmarestia aculeata (Linnaeus) J.V.Lamouroux, 1813 (additional source)
Desmarestia viridis (O.F.Müller) J.V.Lamouroux, 1813 (additional source)
Devaleraea ramentacea (Linnaeus) Guiry, 1982 (additional source)
Dictyosiphon chordaria Areschoug, 1847 (additional source)
Dictyosiphon ekmanii Areschoug, 1875 (additional source)
Dictyosiphon foeniculaceus (Hudson) Greville, 1830 (additional source)
Dictyosiphon macounii Farlow, 1889 (additional source)
Ectocarpus fasciculatus Harvey, 1841 (additional source)
Ectocarpus siliculosus (Dillwyn) Lyngbye, 1819 (additional source)
Elachista chondrii Areschoug, 1875 (additional source)
Endodictyon infestans Gran, 1897 (basis of record)
Enteromorpha clathrata (Roth) Greville, 1830 accepted as Ulva clathrata (Roth) C.Agardh, 1811 (additional source)
Enteromorpha flexuosa (Wulfen) J.Agardh, 1883 accepted as Ulva flexuosa Wulfen, 1803 (additional source)
Enteromorpha intestinalis (Linnaeus) Nees, 1820 accepted as Ulva intestinalis Linnaeus, 1753 (additional source)
Enteromorpha linza (Linnaeus) J.Agardh, 1883 accepted as Ulva linza Linnaeus, 1753 (additional source)
Enteromorpha prolifera (O.F.Müller) J.Agardh, 1883 accepted as Ulva prolifera O.F.Müller, 1778 (additional source)
Enteromorpha stipitata P.J.L.Dangeard, 1959 (additional source)
Epicladia flustrae Reinke, 1889 (additional source)
Epicladia perforans (Huber) R.Nielsen, 1980 (additional source)
Erythrotrichia carnea (Dillwyn) J.Agardh, 1883 (additional source)
Eudesme virescens (Carmichael ex Berkeley) J.Agardh, 1882 (additional source)
Fimbrifolium dichotomum (Lepechin) G.I.Hansen, 1980 (additional source)
Fucus distichus Linnaeus, 1767 (additional source)
Fucus spiralis Linnaeus, 1753 (additional source)
Fucus vesiculosus Linnaeus, 1753 (additional source)
Gelidium pusillum (Stackhouse) Le Jolis, 1863 (additional source)
Gloiosiphonia capillaris (Hudson) Carmichael, 1833 (additional source)
Gomontia polyrhiza (Lagerheim) Bornet & Flahault, 1888 (additional source)
Gracilaria tikvahiae McLachlan, 1979 (additional source)
Gymnogongrus crenulatus (Turner) J.Agardh, 1851 (additional source)
Haplospora globosa Kjellman, 1872 (additional source)
Harveyella mirabilis (Reinsch) F.Schmitz & Reinke, 1889 (additional source)
Herponema desmarestiae (H.Gran) Cardinal, 1964 (additional source)
Hildenbrandia rubra (Sommerfelt) Meneghini, 1841 (additional source)
Isthmoplea sphaerophora (Carmichael) Gobi, 1878 (additional source)
Kornmannia leptoderma (Kjellman) Bliding, 1969 (additional source)
Laminaria digitata (Hudson) J.V.Lamouroux, 1813 (additional source)
Laminariocolax tomentosoides (Farlow) Kylin, 1947 (additional source)
Leathesia difformis Areschoug, 1847 accepted as Leathesia marina (Lyngbye) Decaisne, 1842 (additional source)
Leblondiella densa (Batters) Hamel, 1939 (additional source)
Leptonematella fasciculata (Reinke) P.C.Silva, 1959 (additional source)
Leptophytum foecundum (Kjellman) W.H.Adey, 1966 (additional source)
Lithophyllum orbiculatum (Foslie) Foslie, 1900 (additional source)
Lithothamnion glaciale Kjellman, 1883 (additional source)
Lithothamnion tophiforme (Esper) Unger, 1858 accepted as Boreolithothamnion tophiforme (Esper) P.W.Gabrielson, Maneveldt, Hughey & V.Peña, 2023 (additional source)
Meiodiscus spetsbergensis (Kjellman) G.W.Saunders & McLachlan, 1991 (additional source)
Melanosiphon intestinalis (De A.Saunders) M.J.Wynne, 1969 (additional source)
Melobesia membranacea (Esper) J.V.Lamouroux, 1812 (additional source)